Charity stamps over 0, 50 ++ 1, 50 and 1 ++ 3 Din. With "network overprint tips downward" as well 2 ++ 6 Din. With "network overprint tips to the top" and 4 ++ 12 Din. With "network overprint tips downward" from the set "Aid for Serbian prisoners of war" on official First Day Cover cover with First Day special cancellation BEOGRAD from 5.12.41